London Wasps boss Dai Young has tipped in-form No.8 Billy Vunipola for an England call-up ahead of the Six Nations.

The 20-year-old has earned rave reviews this season and Young believes he is on course to join his brother - Saracens prop Mako Vunipola - in the England set-up where Gloucester's Ben Morgan and Leicester's Thomas Waldrom are currently vying for the No.8 shirt.

Speaking in the wake of Wasps' 25-18 victory over Sale Sharks on Sunday, Young was full of praise for Vunipola. "Billy was outstanding for us, he's been in that vein all season," he said. "It's hard to believe he's only 20 and I believe he's ready for an England call up as he won't let anyone down."